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EFM32WG Datasheet, PDF (680/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications. | |||
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...the world's most energy friendly microcontrollers
28 ADC - Analog to Digital Converter
0123 4
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ADC
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28.1 Introduction
...0101110...
What?
Quick Facts
The ADC is used to convert analog signals
into a digital representation and features 8
external input channels
Why?
In many applications there is a need to
measure analog signals and record them in
a digital representation, without exhausting
your energy source.
How?
A low power Successive Approximation
Register ADC samples up to 8 input channels
in a programmable sequence. With the help
of PRS and DMA, the ADC can operate
without CPU intervention, minimizing the
number of powered up resources. The ADC
can further be duty-cycled to reduce the
energy consumption.
The ADC is a Successive Approximation Register (SAR) architecture, with a resolution of up to 12 bits
at up to one million samples per second. The integrated input mux can select inputs from 8 external
pins and 6 internal signals.
28.2 Features
⢠Programmable resolution (6/8/12-bit)
⢠13 prescaled clock (ADC_CLK) cycles per conversion
⢠Maximum 1 MSPS @ 12-bit
⢠Maximum 1.86 MSPS @ 6-bit
⢠Configurable acquisition time
⢠Integrated prescaler
⢠Selectable clock division factor from 1 to 128
⢠13 MHz to 32 kHz allowed for ADC_CLK
⢠18 input channels
⢠8 external single ended channels
⢠6 internal single ended channels
⢠Including temperature sensor
⢠4 external differential channels
⢠Integrated input filter
⢠Low pass RC filter
⢠Decoupling capacitor
⢠Left or right adjusted results
⢠Results in 2âs complement representation
⢠Differential results sign extended to 32-bit results
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
680
www.energymicro.com
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